-24.92% is the change from 915 to 687
Calculation steps:
[( 687 - 915 ) ÷ 915] x 100 = -24.92%
Formula
Percentage change = [(687 - 915) / 915] x 100
Subtract the new number by the original number
687 - 915 = -228
-228 ÷ 915 = -0.24918032786885247
-0.24918032786885247 x 100 = -24.92%